DE102009048110A1 - Foam sealing tape - Google Patents

Abstract

For delayed recovery impregnated foam sealing tape (1), for example, to the arrangement between a window frame and this associated masonry, with the window frame or the masonry associated broadsides (2, 5), wherein further transversely to the broad sides (2, 5) extending narrow side surfaces (6, 7) are formed and a narrow side surface assigned to her, with the foam sealing tape firmly connected airtight layer (11), characterized in that the air-impermeable layer (11) the narrow side (6) at least partially covers in the installed state.

Description

The invention relates to a delayed-return impregnated foam sealing tape, for example, to the arrangement between a window frame and this associated masonry, with the window frame or masonry associated broadsides, further extending transversely to the broad sides narrow side surfaces are formed and a narrow side surface associated with her, Having tightly connected with the foam sealing tape air-impermeable layer.

Such foam sealing tapes have already become known in many respects. It is for example on the DE 35 44 277 C1 , the DE 39 21 777 C2 , the DE 196 41 415 C2 and the DE 41 23 647 A1 directed.

Foam sealing tapes serve to regulate moisture on the one hand. For this purpose, it is also preferable, for example, to form a higher vapor diffusion resistance on one side across the width of a sealing strip, see, for example DE 10 2008 049 210 A1 and the DE 10 2006 043 050 A1 , On the other hand, an air change should be guaranteed. Sometimes, however, there is too much air exchange.

On this basis, the invention has the object of specifying a delayed-return impregnated foam sealing tape, which, without resulting in disadvantages in terms of resilience, can continue to achieve a relatively low air exchange with continued favorable filling of the joint.

A possible solution to this problem is given by a first inventive concept by the subject matter of claim 1, wherein it is pointed out that the air-impermeable layer only partially covers the narrow side, at least in the installed state. It may be an air-impermeable layer, which overlaps the foam strip outside. However, it may also be an air-impermeable layer, and the latter is preferred in the present context, which runs in the interior of the foam strip, usually achieved by a multi-part structure of the foam strip. It is also essential that only a partial overlap is given in overlapping the narrow side or in projection on the narrow side. If, for example, an air-impermeable layer is formed on the outside across and on the inside, then both must together provide the desired reduced air permeability, but not complete air closure.

The partial coverage of the basically exposed in the installed state narrow side surface can be achieved in that the air-impermeable layer has a porosity. This can be achieved for example by punched holes in the case of a plastic film layer.

It is preferred that the air-impermeable layer reduces the air permeability to a same sealing tape, ie in particular with respect to the foam used and the cross-sectional dimension same sealing tape by 10 to 75%, in particular by 20 to 40%, for example by 30%. The ranges given above also include in the disclosure all intermediate values as disclosed, especially in 1% increments. Also with regard to the range limits, a single or multiple narrowing from above and / or from below is included.

It is particularly preferred that the foam sealing tape is composed in a cross section of two or more foam partial strips and the partial strips are separated from each other by an intermediate layer forming the air-impermeable layer.

Also, this intermediate layer may be partially permeable to air or in total or on a partial surface porous or formed with openings.

It is further preferred that the intermediate layer extends in a cross section at an acute angle to a broad side and, projecting on a side surface, extends only over a partial height of the side surface, wherein moreover the intermediate layer has a lower air permeability than the foam of a foam partial strip ,

By running at an acute angle to a broadside arrangement of the intermediate layer, the air permeability in the relevant projection surface is reduced. The air permeability of the foam sealing tape is thus reduced overall. As a result of the compression and expansion, even in normal conditions, the same height conditions exist in each expansion position. The intermediate layer can in particular be chosen to be comparatively thin. It can be a common plastic film layer. But it can also be a foam layer, for example, a small open-cell foam or a closed-cell foam, act.

In particular, it is preferred that the intermediate layer is airtight. This makes it possible to achieve the greatest effect in terms of reducing the air permeability in relation to the projection area covered thereby.

A further preferred embodiment provides that the separating layer is designed as a self-adhesive layer. More preferably, it is a double-sided self-adhesive layer. A self-adhesive layer usually consists of a pressure-sensitive adhesive layer applied to a carrier. This allows a permanent bond under light pressure. For example, natural rubber pressure-sensitive adhesives in which tackifying tackifiers and plasticizers having relatively low molecular weights are blended are used. In addition, it may also be, for example, an acrylate pressure-sensitive adhesive. The carrier may be a nonwoven material, a fabric tape, a paper strip, a plastic film or the like. Often, a grid, for example made of glass fibers, is inserted into the adhesive. These are preferably the same self-adhesive layers, one of which is also provided on such a sealing tape on the outside, on a broad side.

It is also preferable that the two or more partial foam strips consist of a same foam. It may, for example, be an open-cell flexible polyurethane foam.

The foam partial strips can be provided in cross-section with an equal surface area, optionally also with a different area ratio. Furthermore, it is also preferred that the intermediate layer, at least with respect to its region extending in cross section at an acute angle to a broad side, extends over only a partial region of the cross-sectional width. Following the region extending at an acute angle, the intermediate layer on one or both sides can also extend in cross-section parallel or at a further angle to a broad side. Said acute angle can extend up to a right angle, in which case then the intermediate layer extends at right angles to a broad side.

In the following, the invention will be explained further with reference to the attached drawing, which, however, represents only exemplary embodiments. Hereby shows:

1 a cross section through a first foam sealing tape with Z-shaped arranged intermediate layer;

2 a cross section through a further embodiment of a sealing strip with perpendicular to a broad side extending intermediate layer;

3 a cross section of yet another embodiment, wherein the partial strips groove and tongue-like mesh;

4 a cross section through yet another embodiment with straight bevel division; and

5 a still further embodiment with a film wrapping.

Presented and described is first, with reference to 1 , a foam sealing tape 1 , which is shown in cross-section. The foam sealing tape 1 With regard to the foam, it is made of open-cell foam which is impregnated for delayed recovery. The impregnate may for example consist of a polyacrylate. The foam may be, for example, an open-celled polyurethane foam.

With regard to the use and installation of such a sealing tape 1 Reference is made to the above-mentioned publications. For example, the sealing tape 1 on its first broadside 2 by means of a cover layer 3 provided self-adhesive tape 4 be adhesively connected with a window profile. The opposite broadside 5 then comes due to the provision of an example opposite masonry to the plant. Cross to the broadsides 4 . 5 the narrow sides extend 6 . 7 the foam sealing tape 1 , The name chosen here is not limited to the narrow sides 6 . 7 actually smaller areas are than the broadsides 2 . 5 , Although this is preferred, the ratio is not determined by this.

It is particularly preferred that a width B, d. H. an extension in the depth direction of a joint corresponding to the frame width of a window frame to be sealed, for example. In particular, this width B corresponds to a dimension of 40 to 250 mm, preferably 40 to 150 mm. With regard to the specified numerical bandwidths, all intermediate values, in particular in increments of 1 mm, are also included as disclosed. Furthermore, with regard to the range limits, there is also a one or multiple narrowing of the range limits in 1 mm increments from above and / or from below.

The foam sealing tape 1 consists further in cross section of two foam strips 8th . 9 , In the embodiment take the foam strips 8th . 9 geometrically equal areas. With regard to the area size is the foam sealing tape 1 divided in half.

The foam part strips 8th . 9 lie in a Z-shaped parting line 10 to each other. In this parting line 10 is, at least partially extending in the vertical direction, an intermediate layer 11 arranged. In the embodiment, the intermediate layer exists 11 from a double sided tape. The liner 11 is airtight. But it may also already be sufficient that it is something or much more airtight than the foam of the sealing tape 1 , Also, this double-sided adhesive tape is visible in the illustrated cross-section Z-shaped. In this case, the two closes in the embodiment horizontally extending Z-bar 12 . 13 connecting Z-mid section 14 in an imaginary extension, with the broadside 2 (or broadside 5 ) enter an acute angle alpha. It can also be just a Z-bar on top, ie on the side of the self-adhesive tape 11 , in each case also with reference to the illustration, be provided. It may also be formed only the Z-center section.

A projection of the Z-midsection 14 on a side surface, in the embodiment, this is based on the side surface 7 represented covers a portion a of the total height b of the foam sealing strip 1 ,

In the embodiment according to 1 the area a is centered with respect to the upper and lower areas c, which are not projected through the intermediate layer 11 are covered.

In the embodiment of 2 is the liner 11 arranged such that the corresponding height section a, starting from the one broad side, here broadside 5 , up to a middle region of the sealing strip 1 extends. Then, in the height direction, a region c is given, which extends from the end of the region a to the second broad side 2 extends. The liner 11 can be in 2 also extend only vertically.

In the embodiment of the 3 are the two foam strips 8th . 9 formed geometrically different. During the foam partial strip 9 , based on the cross-sectional view, a central height training 15 has, has the foam sub stripe 8th two with altitude training 15 matching side height formations 16 . 17 on, passing through a valley area 18 merge. The height range 15 fits in the of the height ranges 16 . 17 and the valley area 18 formed opening.

Here is just on one of the two valley slopes, here the valley slope of the altitude range 17 , the liner 14 intended. It is also provided here only in a straight line extending in cross section. But you could also, as in the embodiment 1, Z-shaped extending provided.

In the embodiment of 4 the foam sealing tape consists of two geometrically identical foam strips 8th . 9 together. The dividing line between the foam part strips 8th . 9 However, it is now provided in the cross-sectional view seen in a straight line continuously. Accordingly, the intermediate layer extends 14 straight.

In the embodiment of 5 another basic principle is realized. Here is in the cross section intact, ie in the usual way formed at right angles foam sealing tape 1 provided, the one or both sides of a film 19 is wrapped. On the one hand to achieve an air permeability on the one hand, but on the other hand to allow them only limited, are on the one narrow side 7 facing area of the film 19 Through holes 20 educated. These are provided in such a size and / or distribution or the height and / or length of the sealing strip that the desired air exchange rate is established.

The height ranges and low ranges are preferably aligned with a longitudinal direction of the foam sealing strip 1 running trained. In the embodiment of the 2 is based on the right side of the local cross-sectional representation of the low range adapted by tierhaltigem increase to the height range. Here is the special feature that the foam in a peripheral region is still contiguous. He can also be completely separated and only by the liner 11 the two foam parts can be held together.

The embodiment of the 3 is also characterized by the fact that in opposite directions two foam parts 8th . 9 are composed, the once, in the embodiment, the upper part 8th , two height ranges 16 . 17 and in the width direction between the height ranges, a low range 18 is formed, wherein the height ranges 16 . 17 and the low range 18 in alignment with a longitudinal direction of the foam sealing strip 1 run. While in the embodiment of the lower foam strips 9 only one, medium height range 15 has, the perfect fit in the low range 18 of the upper foam sub-strip 8th fits.

As already mentioned, there may also be a combination between the exemplary embodiments. So in particular the sealing strips 1 according to the 1 to 4 also on a narrow side 6 . 7 still with a perforated, film according to the embodiment of the 5 be educated. In the embodiment of the 5 is also a fold below to recognize, but a folding may be sufficient, which provides the length of supply in the course of the provision. Further, preferably the U-legs of the here total U-shaped, in cross-section, arranged film with the foam sealing strip 1 glued together. In addition, here is also on a page, at Exemplary upper side, a self-adhesive tape 4 with a cover 3 educated. The self-adhesive tape is also provided here as a double-sided adhesive tape.

All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3544277 C1 [0002]
• DE 3921777 C2 [0002]
• DE 19641415 C2 [0002]
• DE 4123647 A1 [0002]
• DE 102008049210 A1 [0003]
• DE 102006043050 A1 [0003]

Claims (10)

For delayed recovery impregnated foam sealing tape ( 1 ), for example, to the arrangement between a window frame and this associated masonry, with the window frame or masonry associated broadsides ( 2 . 5 ), whereby further transversely to the broadsides ( 2 . 5 ) running narrow side surfaces ( 6 . 7 ) are formed and a narrow side surface assigned to her, with the foam sealing tape firmly connected airtight layer ( 11 ), characterized in that the air-impermeable layer ( 11 ) the narrow side ( 6 ) only partially covers in the installed state. Foam sealing strip according to one or more of the preceding claims or in particular according thereto, characterized in that the partial covering by a porosity of the air-impermeable layer ( 11 ) is reached. Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the foam sealing tape ( 1 ) in a cross section of two or more foam partial strips ( 8th . 9 ) and the partial strips ( 8th . 9 ) by an air-impermeable layer ( 11 ) forming intermediate layer are separated from each other. Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the intermediate layer ( 11 ) in the cross section at an acute angle to a broad side. Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the intermediate layer ( 11 ) projecting onto the narrow side surface ( 6 . 7 ) only over part (a) of the height of the narrow side surface ( 6 . 7 ). Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the intermediate layer ( 11 ) is formed airtight. Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the intermediate layer ( 11 ) is designed as a self-adhesive layer. Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the intermediate layer ( 11 ) is designed as a double-sided self-adhesive layer. Foam sealing tape according to one or more of the preceding claims or in particular according thereto, characterized in that the two or more partial strips ( 8th . 9 ) consist of a same foam. Foam sealing strip according to one or more of the preceding claims or in particular according thereto, characterized in that the part (a) of the height of the side surface ( 6 . 7 ) which in projection from the intermediate layer ( 11 ) is 5 to 95% of the total height of the side surface.

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